ensure clean shutdown of all threads running JS

This commit is contained in:
Gregory Terzian 2020-06-24 15:07:48 +08:00
parent 0b61cfc3ae
commit 44ebca72da
25 changed files with 565 additions and 232 deletions

View file

@ -52,7 +52,10 @@ use js::jsapi::{BuildIdCharVector, DisableIncrementalGC, GCDescription, GCProgre
use js::jsapi::{Dispatchable as JSRunnable, Dispatchable_MaybeShuttingDown};
use js::jsapi::{HandleObject, Heap, JobQueue};
use js::jsapi::{JSContext as RawJSContext, JSTracer, SetDOMCallbacks, SetGCSliceCallback};
use js::jsapi::{JSGCInvocationKind, JSGCStatus, JS_AddExtraGCRootsTracer, JS_SetGCCallback};
use js::jsapi::{
JSGCInvocationKind, JSGCStatus, JS_AddExtraGCRootsTracer, JS_RequestInterruptCallback,
JS_SetGCCallback,
};
use js::jsapi::{JSGCMode, JSGCParamKey, JS_SetGCParameter, JS_SetGlobalJitCompilerOption};
use js::jsapi::{
JSJitCompilerOption, JS_SetOffthreadIonCompilationEnabled, JS_SetParallelParsingEnabled,
@ -845,6 +848,34 @@ unsafe fn set_gc_zeal_options(cx: *mut RawJSContext) {
#[cfg(not(feature = "debugmozjs"))]
unsafe fn set_gc_zeal_options(_: *mut RawJSContext) {}
#[repr(transparent)]
/// A wrapper around a JSContext that is Send,
/// enabling an interrupt to be requested
/// from a thread other than the one running JS using that context.
pub struct ContextForRequestInterrupt(*mut RawJSContext);
impl ContextForRequestInterrupt {
pub fn new(context: *mut RawJSContext) -> ContextForRequestInterrupt {
ContextForRequestInterrupt(context)
}
#[allow(unsafe_code)]
/// Can be called from any thread, to request the callback set by
/// JS_AddInterruptCallback to be called
/// on the thread where that context is running.
pub fn request_interrupt(&self) {
unsafe {
JS_RequestInterruptCallback(self.0);
}
}
}
#[allow(unsafe_code)]
/// It is safe to call `JS_RequestInterruptCallback(cx)` from any thread.
/// See the docs for the corresponding `requestInterrupt` method,
/// at `mozjs/js/src/vm/JSContext.h`.
unsafe impl Send for ContextForRequestInterrupt {}
#[derive(Clone, Copy)]
#[repr(transparent)]
pub struct JSContext(*mut RawJSContext);